Portable smart card communication device

1. Field of the Invention A transceiver assembly is designed to receive a controller module or to be inserted into a controller module to form a portable smart card communication device. The transceiver assembly includes a transceiver and a connector to electrically connect the controller module to the transceiver. The controller module establishes a communication link between itself and a smart card by sending and receiving signals and data through the connector. Information is read from the smart card and forwarded to the controller module. Information is transmitted through the transceiver assembly and stored on the smart card. The controller module can easily be disconnected from the transceiver assembly for use with other transceiver assemblies.